Vehicle-wheel.



No. 852,289. EATENTED APE. so, 1907.

W. E. M. MGGAETY.

VEHICLE WHEEL.

APPLIGATON ILED DEO.19,1906.

`WILLIAM F. MASON MOCARTY,

or rLEAsANTvi'LLE, New YORK'.

VEHICLE-WHEEL.

Specication of Letters Patent.

Patented April 30, 1907.

Application filed December 19,1906. Serial N o. 348.639.

MCCARTY, a citizen of the United States, re-

siding at Pleasantville, in the countyof Allestchester and State of NewYork, have invented certain new and useful Improvements inVehicle-llflieels, of which the following is a specification.

This invention relates to new and useful improvements in vehicle wheelsand it has particular reference to a wheel of the Hcushion type employedfor heavy road work.`

In connection with a wheel of the above type the invention aims toprovide a novel construction7 combination and arrangement of cushioningelements, whereby the wheel constituted thereof shall he simple inconstruction, inexpensive to manufacture and practical and efli cient inuse.'

The detailed construction will appear in the course of the followingdescription in which reference is had to the accompanying drawingsforming a part of this specification, like characters of referencedesignating similar parts throughout the several views,

wherein.

Figure 1 is a side-elevation, partly in section, of a cushion wheelconstructed in accordance with my invention. Fig. 2 is a transversesectional view thereof. Fig. 3 is a transverse sectional view of aslightlyr modified adaptation of the invention, and Fig. 4 is a partialsectional view of a still further modified construction.

Referring specifically to the accompanying drawing the letter Adesignates an axle or hub, and the letter I3 the wheel mounted thereon.The wheel B comprises an inner section 1 and an outer section Thesection 1, is secured to the hub or axle r1, as the case may be and isof substantial disk shape.

In the preferred embodiment of the invention as shown in Fig. 2, thesection 1 at its inner edge has an annular collar 3 and at its outeredge an annular peripheral groove 4. To the sides of the section l.there are se-4 cured co-extensive liners 5 projecting slightly beyondthe edges of the groove 4. The outer section 2 loosely surrounds thesection 1 in concentric relation and is constituted of a plurality ofwedge shaped plates 6 united together by suitable fastening meanspassing throu h their adjacent confronting flanges 7. T e plates 6 arearranged in corresponding pairs on each side of the section 1 and` in Esuch arrangement are united by an integral tread portion 8. The treadportions 8 have curved outer faces which co-act throughout the series toafford an annular peripheral surface. The inner faces of the treadportions S are likewise curved peripherally and are arranged in spacedrelation to the outer periphera edge 4 of the section 1. In suchdisposition the tread portions 8 are grooved as at 9. The grooves Il and9 are designed to conform to the cross sectional curvature of acushioning tube 10 held therebetween. In order to prevent the creepingof the tube or of either of the sections 1 and 2, the surfaces of saidrgrooves et and 9 are serrated or corrugated as at 11. This last namedfeature is clearly shown in Fig. 1. Adjacent the collar 3 there aresecured to the wheel 1 on each side thereof, annular plates 12 which arecoextensive and which adjacent their edges are. gradually ofi-set as at13 so that a space occurs between the same and the adjacent liner 5. Itis preferred that the inner edges of the plates 6 project slightly intosuch space and overlie the oil-sets 13. Said inner edges are oppositelybeveled on each side of the wheel 1 as at 14. Between the inner bevelededges 14, and the plate 12 a series of elastic cushioning tubes or bands15 is interposed. It will thus be seen that the plates 12 ail'ord dustguard for thc inner section 1 and for all the concealed parts and inthis function co-cperate with the plates 6 of the outer section 2. :Itwill be understood that the disclosure is purely arbitrary as regardsthe cushioning elements since springs or other ofthe tubes 9 and 15.

The modification illustrated in Fig. 3 differs from that shown in Fig.2, in that the plates 12 are eliminated and the off-sets 13 are castintegral with the liner 5. In this modified embodiment the collar 3 isconstituted by flanging or enlarging the inner edges of the liners 5. Afurther departure from the embodiment described, consists in eX- tendingthe edges of the plate 6 as at 16, so as to bring them into positivecontact with 111' OSC Of tIlTOI'CllIlO L 11101'6 GIIlCaCIOUS (lust 1 t:A seal or guard.

volves the same principles of assemblage and operation asthe'constructions of Figs. 2 and 3, but diers materially 'therefrom inits detailed elements. v The inner section 1 at its the sides of theoff-sets 13 for the obvious The modified construction yof Fig. 4 inresilient members maybe employed instead arranged only on one side ofthe section 1 and at its inner edge'has an enlarged portion 20 having aninwardly projecting flange 21 which overlaps the flange 1S and co-actswith the section 1 to afford a closed annular recess. Adjacent its outeredge the section 'i2 is off-set as at 22 to conform to the adjacent sideof the flange 19 and is then bent upon itself as at 23 to afford anannular recess or Way for the reception of a tread cushioning tube 24.Cushioning tubes A25 are interposed between the adjacent edges of theenlarged portions 17 and 20 of said respective sections.

From the foregoing description the advantages of the Wheel embodied inthe present invention, in practical use, will be readily apparent. Whenthe outer section encounters an obstruction or surface irregularity, theinitial shock is labsorbed by the cushioning elements embodied in thewheel and is hence prevented from violent reaction upon the innersection of the wheel, the' axle or the spring of the vehicle. Owing tothe novel assemblage of the sections, whereby the use of all positiveconnections is dispensed with, the outer section may yield with respectto the inner section with the utmost freedom in the performance of itsfunction.

rl`he manner of constructing the outer section permits of the readyassemblage of the wheel and its disposition with relation to the innersection causes the overlying parts to assume the functions of a positiveguard in housing and protecting the concealed elements from the dust andthe elements.

While the elements herein shown and described are well adapted to servethe functions set forth, it is obvious that various minor changes may bemade in the proportions, shape and arrangement of the several partswithout departing from the spirit and scope of the invention as definedin the appended claims.

Having fully described my invention I claim: j

.1. Awheel of the type set forth comprising a fixed inner section, anouter section loosely surrounding the same and having its tread portionoverlying the periphery of said inner section, said inner section havinga projective annular portion adjacent its hub overlying said outersection and defining an annular recess, a pneumatic annular tubeinsurrounding the same, and having its tread -v portion overlying theperiphery of said inner section, said y inner section having anoutwardly extending angular annular flange overlying said inner sectionadjacent to the edge thereof, and coacting with said edge to afford anannular recess, a pneumatic annular tube interposed between theperiphery of said innersection and the tread of said. outer section, andone or more annular pneumatic tubes interposed in said annular recess.

3. A Wheel of the type set forth comprising a fixed inner section, anouter section loosely surrounding the same and having its tread portionoverlying the periphery of said inner section, said outer section havinga central opening, an outwardly extending flange provided upon saidinner section adjacent the hub thereof and extending in approximatelyspaced parallel relation to the body of said section, said flangeoverlying the edge of the central opening of said outer section andcoacting with said edge to define an annular recess, an annularpneumatic tube interposed between the periphery of said inner sectionand theV tread of said outer section,

and one or more annular pneumatic tubes interposed in said recess. l

.4. A wheel of the type set forth comprising a fixed inner section, anouter section of U- shape in cross section loosely surrounding saidinner section and having parallel side portions overlying said innersection, vsaid side portions each having a central opening, j

said inner section being provided on each roo and the tread of saidouter section, and one WILLlAM F. MASON MCCARTY.

Witnesses HENRY BAKER, RoBnRT B." HOWLAND.

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